TABLE OF CONTENTS 



PAGE 



Prefatory Note iii 



Table of Contents v 



List of Figures in Text vii 



List of Plates xi 



List of Species New to Science Described in this Volume xv 



Errata, Corrigenda, and Amplifications by the Author of Me- 

 moir on Cheirodontin^ xix 



Memoir No. 1. The Cheirodontinse, a Subfamily of Minute Characid 



Fishes of South America. By Carl H. Eigenmann . . 1-100 

 Memoir No. 2. The Fossil Turtles of the Uinta Formation. By Charles 



W. Gilmore 101-162 



Memoir No. 3. A Catalog of the Ophidia from South America at 

 Present (June, 1916) contained in the Carnegie Mu- 

 seum, with Descriptions of Some New Species. By 



Lawrence Edmonds Griffin 163-228 



Memoir No. 4. Pimelodella and Tj'phlobagrus. By Carl H. Eigen- 

 mann 229-258 



Memoir No. 5. The Pygidiidae, a Family of South American Catfishes. 



By Carl H. Eigenmann 259-398 



Memoir No. 6. The American Diceratheres. By 0. A. Peterson 399-476 



Index 477-488 



